<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item to="/home">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片 -->
    <el-card>
      <el-alert title="添加商品信息" type="info" center show-icon :closable="false"> </el-alert>
      <el-steps :space="200" :active="activeIndex - 0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <el-form :model="addForm" status-icon :rules="addFormRules" ref="addRuleForm" label-width="100px" label-position="top">
        <!-- tab栏区 -->
        <el-tabs tab-position="left" v-model="activeIndex" :before-leave="beforeTableLeave" @tab-click="tabClicked">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格(元)" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量(kg)" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <!-- @change="parentCateChange"  -->
              <el-cascader clearable v-model="addForm.goods_cat" :options="cateList" :props="cateProps" @change="parentCateChange"></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item v-for="item in goodsParams" :key="item.attr_id" :label="item.attr_name">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox v-for="(val, i) in item.attr_vals" :key="i" :label="val" border size="mini"></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item v-for="item in goodsProperty" :key="item.attr_id" :label="item.attr_name">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action表示要传图片的地址 -->
            <el-upload :action="uploadURL" :on-preview="handlePreview" :on-remove="handleRemove" list-type="picture" :headers="headerObj" :on-success="handleSuccess">
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器组件 -->
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" style="margin-top: 15px" @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 图片预览 -->
    <el-dialog title="图片预览" :visible.sync="previewDialogVisible" width="50%">
      <img :src="previewPath" width="100%" />
    </el-dialog>
  </div>
</template>

<script>
import { getCateList, getCateParams, addGood } from '@/api'
export default {
  name: 'AddGoods',
  data() {
    return {
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        // 图片的数组
        pics: [],
        // 介绍
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_price: [{ required: true, message: '请输入商品价格', trigger: 'blur' }],
        goods_weight: [{ required: true, message: '请输入商品重量', trigger: 'blur' }],
        goods_number: [{ required: true, message: '请输入商品数量', trigger: 'blur' }],
        goods_cat: [{ required: true, message: '请选择商品分类', trigger: 'change' }]
      },
      // 商品分类列表
      cateList: [],
      cateProps: {
        expandTrigger: 'hover',
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      // 商品参数
      goodsParams: [],
      goodsProperty: [],
      // 上传图片URL地址
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      // 图片上传请求头
      headerObj: {
        Authorization: sessionStorage.getItem('token')
      },
      // 预览图片
      previewPath: '',
      previewDialogVisible: false
    }
  },
  methods: {
    // 级联选择器改变事件
    parentCateChange() {
      if (this.addForm.goods_cat.length !== 3) {
        return (this.addForm.goods_cat = [])
      }
      console.log(this.addForm)
    },
    // 标签页切换之前的钩子
    beforeTableLeave(activeName, oldActiveName) {
      console.log(activeName, oldActiveName)
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.warning('请先选中商品分类')
        return false
      }
    },
    async tabClicked() {
      // 商品参数面板
      if (this.activeIndex === '1') {
        this.goodsParams = await this.getParamsList('many')
        console.log(this.goodsParams)
        // 商品属性面板
      } else if (this.activeIndex === '2') {
        this.goodsProperty = await this.getParamsList('only')
        console.log(this.goodsProperty)
      }
    },
    // 获取参数和属性的方法
    async getParamsList(sel) {
      let arr = []
      const { data: res } = await getCateParams(this.cateId, sel)
      if (sel === 'many') {
        res.data.forEach((ele) => {
          if (ele.attr_vals) {
            ele.attr_vals = ele.attr_vals.split(' ')
          } else {
            ele.attr_vals = []
          }
        })
      }
      if (res.meta.status !== 200) return this.$message.error('获取数据失败')
      arr = res.data
      return arr
    },
    // 预览图片的操作
    handlePreview(file) {
      console.log(file)
      this.previewPath = file.response.data.url
      this.previewDialogVisible = true
    },
    // 移除图片的操作
    handleRemove(file) {
      console.log(file)
      const filePath = file.response.data.tmp_path
      this.addForm.pics = this.addForm.pics.filter((ele) => ele.pic !== filePath)
      console.log(this.addForm.pics)
    },
    // 图片上传成功事件
    handleSuccess(response) {
      const picInfo = { pic: response.data.tmp_path }
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
      // console.log(response)
    },
    add() {
      console.log(this.addForm.goods_introduce)
      this.$refs.addRuleForm.validate(async (valid) => {
        if (!valid) return this.$message.warning('请填写完整')
        this.addForm.goods_cat = this.addForm.goods_cat.join(',')
        // 处理动态参数与静态属性
        this.goodsParams.forEach((ele) => {
          const newInfo = {
            attr_id: ele.attr_id,
            attr_value: ele.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        this.goodsProperty.forEach((ele) => {
          const newInfo = {
            attr_id: ele.attr_id,
            attr_value: ele.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })
        console.log(this.addForm)
        const { data: res } = await addGood(this.addForm)
        if (res.meta.status !== 201) {
          this.addForm.goods_cat = this.addForm.goods_cat.split(',')
          console.log(res)
          return this.$message.error('添加商品失败')
        }
        this.$message.success('添加商品成功')
        this.$router.replace('/home/goods')
      })
    }
  },
  async created() {
    const { data: res } = await getCateList({ type: 3 })
    if (res.meta.status !== 200) return this.$message.error('获取商品分类失败')
    // console.log(res.data)
    this.cateList = res.data
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      } else {
        return null
      }
    }
  }
}
</script>

<style></style>
